The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 17, 2023
Filed:
Sep. 06, 2022
Applicant:
Wcm Industries, Inc., Colorado Springs, CO (US);
Inventors:
William T. Ball, Colorado Springs, CO (US);
Eric Pilarczyk, Colorado Springs, CO (US);
Assignee:
WCM Industries, Inc., Colorado Springs, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E03C 1/10 (2006.01); F16K 17/04 (2006.01); F16K 15/06 (2006.01);
U.S. Cl.
CPC ...
E03C 1/106 (2013.01); F16K 15/066 (2013.01); F16K 17/04 (2013.01); F16K 17/048 (2013.01); Y10T 137/3149 (2015.04); Y10T 137/3331 (2015.04); Y10T 137/7922 (2015.04); Y10T 137/88054 (2015.04);
Abstract
A double check valve is provided that includes an in-line inlet check valve and an outlet check valve that cooperate to prevent back flow of fluid through the valve. The check valve also includes at least one vent that allows for fluid trapped within the check valve to drain, thereby preventing freezing of the check valve and hydrant to which it is interconnected. The check valve provided omits many superfluous components and thus is smaller and easier to install than check valves of the prior art.